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@eine gisten atwt @frn JOSEPH BARKER, OF AMBOY, ILLINOIS, ALSSIGrNOIi',`T O 'HIMSELF AND AALONZO KINYON, OF SAME PLAGE. y

Letters Patent No. 74,483, dated February 18, v1868.

IMPROVEMENT IN SEPARATOR-SlBVES.

TO yALL WHOM IT 'MAY CONOERN:

chaff or refuse. In the accompanying plate of drawings- `:Be it knownthat I, JOSEPH BARKER, of Amboy, in the county ofLee, and State ofIllinois, have invented anew and useful Improvementin SeparatorSieves;and I doAhereby decla-re that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being had to the accompanying drawingsforming part of this specification. i

This invention relates to a new and improved method of constructing thesieves of tanning-mills, whereby one hind of see'd is more perfectlyseparated from another, and whereby-the same more easily free themselvesfrom chaii' and refuse. l

'It consists of-a frame covered with wire gan/ze on both sides. aportion of the wire gauze on one end of the frame being coarser.' p

It consists also in the frame being inclined at thc'back end of thesame, whereby the same cleans itself from Figure 1 is a plan view of myinvention.

Figure 2 is a longitudinal section of the same, taken in the line x z,fig. 1.

Figure 3 is a cross-section ofthe same, taken in the line y y, g. 1.

Similar letters of reference indicate corresponding parts.

A is the frame; B is the wire gauze or netting; C isV4 coarscr wireganse; a are strips on the frame A. The frame A. is constructed of wood,or other suitable material, composed of two sides, with cross-strips onone edge,4 said sides being formed so as that the sieve will be inclinedupon-the shoe at a greater angle than` the sieves now commonly in use,said sides being also` provided, upon one or-the inclined edge of thesame, with thestrips a,

or their equivalent, by means of which said strips the pitch of thesieve on'the shoe is regulated. The strips a are made of wood, or othersuitable material, are narrower than 4the thickness ofthe sides of theframe A, and secured thereto by screws, or in any convenient way. Theframe A is covered, uponlboth the top and bottom sides, with a wiregauze or netting C, which, commencing a little one side of the-middle'ofthe same on one side, extends. around one end of the frame A, and nearlyto theother end of the same, from which point said frame is furthercovered, on the 'same side, to the end of the frame, with a coarser wirenetting C, as shown in the drawing, and so as to form a double sieve.

, The operation is such Athat the inclination of thesieve causes thesame to free itself from haftfor refuse,

and the coarsernetting separates one hind ot' seed, as clover-seed, fromanother kind of seed, as timothy-seed.

I claim as new, and desire to secure by Letters P atent- A i A doublesieve, for separating seeds, of coarser andiner netting, having thesides of the same so shaped as to incline the sieve to the shoe, intanning-mills, said sides being provided withthe strips a, or theirequivalent, substantially as shown and described, and for the purposesset forth. i

The above specification of my invention signed by me, this 25th day ofNovember, 1867s i I i JOSEPH BARKER.

Witnesses:

. WILLIAM B. ANDREWS Josmn LITTLE.

